Digital radio water meter

NEW

OpTherma HYDRODIGIT-S1

Digital single-jet water meter with 8-digit display with integrated wireless transmission modules wM-Bus / LoRa for remote reading

Type: single‑jet, 8-digit digital display and 360° rotatable LCD panel

Dimensions: DN15 (½") and DN20 (¾"), installation length 80mm, 110mm or 130mm

Flow rate Q₃: 2.5m³/h (DN15) and 4m³/h (DN20); class R160‑VH with versions R250, R400 options

Temperature range: cold water 0.1–50°C; hot water 30–90°C

Housing: brass with magnetically resistant inductive mechanism

Battery life up to 10 years with low battery alert

IP68Dust- and waterproof

Description

Communication & battery

Integrated radio module:
Wireless M-Bus (OMS/S-mode) +
LoRaWAN (EU863-870, Class A)
Plug & Play – the radio activates automatically after 5 L of water
IR port (IEC 62056-21) for local PC connection via IR cable (UC-Cable)
Battery: up to 10 years, with end-of-life alert

Smart functions & alarms

Configurable alarms: reverse flow, leaks / excessive consumption, continuous operation at maximum flow, tampering
Consumption history for the last 12 months
Magnetic tamper protection

Technical details

Flow class: Q₃: 2.5 m³/h (½″), 4 m³/h (¾″)

Flow range: Q₁–Q₄: min 15 l/h, Q₂ 25 l/h; Q₄ = 1.25×Q₃–5×Q₃

Installation lengths: 80 / 110 / 130 mm

Operating temperature: 0.1–50 °C for cold water, 30–90 °C for hot water

Max. pressure: MAP 16 bar

Electrical interface: IR (IEC 62056-21)

Communication: LoRaWAN (EU863-870) and Wireless M-Bus OMS

Protection: IP68, magnetic tamper protection

Battery: 10 years + end-of-life alarm

Historical data: 12 months

Material: brass + plastic housing